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QA - Placement Quizzes | Pipes and Cisterns | Question 9
Two pipes A and B work alternatively with a third pipe C to fill a swimming pool. Working alone, A, B and C require 10, 20 and 15 hours respectively. Find the total time required to fill the pool.
(A)
7 hours 14 minutes
(B)
6 hours 54 minutes
(C)
5 hours 14 minutes
(D)
8 hours 54 minutes
Answer
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